#app{
	width: 1200px;
	margin: 0 auto;
	padding-top: 50px;
}
.line{
margin-bottom: 20px;	
}
.pram{
	width: 200px;
	display: inline-block;
}
.input{
	width: 900px;
	display: inline-block;
}
.re{
	margin-top: 20px;
}
.text{
	line-height: 30px;
}
#ex{
	margin-top: 20px;
}
